Table 3.

Physical property measurements of Ziphius cavirostris forehead and mandibular tissues by tissue type

Forehead samples Mandible samples
Blubber (N=36)Acoustic fats (N=66)Muscle (N=13)Connective tissue (N=30)Blubber (N=11)Acoustic fats (N=44)
Sound speed at 37°C (m s-1)
   Mean140113821517162813761350
   s.d.7.82346.848.71310.6
   Min.138213411460153813451331
   Max.142214091592170813941378
Sound speed at 21°C (m s-1)
   Mean146514501522162014531460
   s.d.8.317.647.248.78.810.6
   Min.144614121461153114411442
   Max.148914831594170014681488
Density (kg m-3)
   Mean9359379931087919890
   s.d.251758411323
   Min.8829089091007901854
   Max.98698710661175937941
Hounsfield unit
   Mean-84-81-3345-102-78
   s.d.15122345327
   Min.-106-96-61-36-106-106
   Max.-46-472109-95-65
Hysteresis (%)
   Mean28.432.553.521.729.4
   s.d.11.29.216.07.814.1
   Min.0.615.511.211.65.6
   Max.46.951.477.133.088.8